Compound Information 

Name: pyridazine
Formula: C4H4N2
Molar Mass: 80.09
Additional Names: orthodiazine
1,2-diazine
1,2-diazabenzene
Image of pyridazine
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Property Availability 

For this compound, WTT contains critically evaluated recommendations for:

  • Critical temperature (Liquid and Gas)
    • Critical density (Liquid and Gas)
      • Density (Liquid in equilibrium with Gas) as a function of Temperature
        Temperature from 230 K to 735 K
        3 experimental data points
        • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
          Temperature from 298 K to 1000 K
          • Enthalpy (Ideal Gas) as a function of Temperature
            Temperature from 298 K to 1000 K
            • Entropy (Ideal Gas) as a function of Temperature and Pressure
              Temperature from 298 K to 1000 K
              • Enthalpy of formation (Liquid)
                1 experimental data points

                About WTT 

                NIST/TRC Web Thermo Tables (WTT)
                NIST Standard Reference Subscription Database 3 - Professional Edition
                Version 2-2012-1-Pro

                This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package [1, 2, 3, 4, 5, 6]. Some critically evaluated data from the historical TRC Thermodynamic Tables archive [7, 8] are included, also. As of May 2012, the Professional Edition contains information on 28432 compounds and total of 531486 evaluated data points. The properties covered by both versions (32 total) are described in Properties and Implemented Models.

                Developed by Kenneth Kroenlein, Chris D. Muzny, Andrei F. Kazakov, Vladimir Diky, Robert D. Chirico, Joseph W. Magee, Ilmutdin Abdulagatov and Michael Frenkel.

                Thermodynamics Research Center (TRC)
                Thermophysical Properties Division
                National Institute of Standards and Technology
                Boulder CO 80305-3337

                Questions and comments should be addressed to Dr. Michael Frenkel .

                DISCLAIMER: The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high-quality copy of the database and to verify that the methods and data contained therein have been selected on the basis of sound scientific judgement. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the program and database.

                Distributed by:
                Standard Reference Data Program
                National Institute of Standards and Technology
                Gaithersburg MD 20899

                Compound Information
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